Massachusetts car sales tax, in one line
Massachusetts charges 6.25 percent sales tax on a vehicle, and the buyer pays it. On a private sale the money does not change hands between buyer and seller at all. The buyer pays the Registry of Motor Vehicles directly when they register the car.
That single fact clears up most of the confusion. If you are selling your car to another person, you are not collecting tax, not remitting tax, and not responsible for it.
What the 6.25 percent is calculated on
The Registry does not simply take your word on the price. Tax is charged on the purchase price or on the National Automobile Dealers Association clean trade-in value, whichever is higher.
This is why writing a token amount on the paperwork does not work. If a car with a book value of $9,000 is sold for $500, the RMV will still assess tax against the higher figure unless there is a documented reason for the low price, such as damage. A clear bill of sale that reflects the real transaction is what keeps this straightforward.
It also explains why the tax on a late model BMW or Mercedes-Benz lands so much heavier than on an older commuter car. The book value drives the number, not the deal you negotiated in a driveway in Newton or Brookline.
When no tax is due
There are exemptions, and the common one is family. A car transferred between certain close family members can be exempt from sales tax, using the appropriate Registry affidavit. The forms and the qualifying relationships are covered in gifting a car in Massachusetts.
Other exemptions exist for specific circumstances, including some transfers involving trusts and estates. If the car is coming out of an estate, selling an inherited car walks through that process.
The trade-in credit, and what it is really worth
Buying from a dealer and trading a car in at the same time reduces the amount you are taxed on. Tax applies to the difference between the new car’s price and the trade allowance, not the full sticker.
That credit is real, and it is the strongest argument for trading in. It is also frequently oversold. The credit is 6.25 percent of the trade allowance, so a $10,000 trade-in saves roughly $625 in tax. If selling the same car separately brings meaningfully more than the dealer’s allowance, the higher sale price can outweigh the tax saving. Running both numbers before you decide is the entire point of trade in or sell your car.
Sales tax when you sell, not buy
Selling your car does not create a sales tax bill for you. What you should watch instead is the excise tax, which is billed annually by your city or town and does not stop on its own when the car leaves your driveway. You have to cancel the registration and request an abatement, which is the step covered in what to do with your plates after selling a car.
If you would rather skip the private buyer entirely, you can get a written offer on your car and let the paperwork run through a licensed dealer instead.
Common questions
What is the sales tax on a car in Massachusetts?
6.25 percent, charged on the purchase price or the NADA clean trade-in value, whichever is higher.
Who pays sales tax on a private car sale?
The buyer, at the Registry, when they register the vehicle. The seller does not collect it.
Do I pay sales tax if the car was a gift?
Transfers between qualifying family members can be exempt with the correct Registry affidavit. Other gifts are generally taxable.
Does a trade-in reduce sales tax in Massachusetts?
Yes. When you trade a vehicle in at a dealer, tax applies to the price difference rather than the full purchase price.
What is the sales tax on a $30,000 car?
At 6.25 percent, $1,875, before any trade-in credit is applied.
Where We Buy Cars
We buy cars across Greater Boston, MetroWest, the North Shore, the South Shore, Cape Cod, Seacoast New Hampshire, Rhode Island.
Popular towns: Newton, Somerville, Cambridge, Worcester, Providence, Manchester, Brookline, Waltham.
Selling a specific make? See the brands we buy: BMW, Mercedes-Benz, Porsche, Toyota, Honda, Jeep, Tesla, Lexus and more.
